<?php 

if( ! defined( 'ABSPATH' ) ) exit; // Exit if accessed directly

if( ! class_exists('ACF_Location_Post') ) :

class ACF_Location_Post extends ACF_Location {
	
	/**
	 * Initializes props.
	 *
	 * @date	5/03/2014
	 * @since	5.0.0
	 *
	 * @param	void
	 * @return	void
	 */
	public function initialize() {
		$this->name = 'post';
		$this->label = __( "Post", 'acf' );
		$this->category = 'post';
    	$this->object_type = 'post';
	}
	
	/**
	 * Matches the provided rule against the screen args returning a bool result.
	 *
	 * @date	9/4/20
	 * @since	5.9.0
	 *
	 * @param	array $rule The location rule.
	 * @param	array $screen The screen args.
	 * @param	array $field_group The field group settings.
	 * @return	bool
	 */
	public function match( $rule, $screen, $field_group ) {
		
		// Check screen args.
		if( isset($screen['post_id']) ) {
			$post_id = $screen['post_id'];
		} else {
			return false;
		}
		
		// Compare rule against post_id.
		return $this->compare_to_rule( $post_id, $rule );
	}
	
	/**
	 * Returns an array of possible values for this rule type.
	 *
	 * @date	9/4/20
	 * @since	5.9.0
	 *
	 * @param	array $rule A location rule.
	 * @return	array
	 */
	public function get_values( $rule ) {
		$choices = array();
		
		// Get post types.
		$post_types = acf_get_post_types(array(
			'show_ui'	=> 1,
			'exclude'	=> array('page', 'attachment')
		));
		
		// Get grouped posts.
		$groups = acf_get_grouped_posts(array(
			'post_type' => $post_types
		));
		
		// Append to choices.
		if( $groups ) {
			foreach( $groups as $label => $posts ) {
				$choices[ $label ] = array();
				foreach( $posts as $post ) {
					$choices[ $label ][ $post->ID ] = acf_get_post_title( $post );
				}
			}
		}
		return $choices;
	}
}

// initialize
acf_register_location_type( 'ACF_Location_Post' );

endif; // class_exists check
